On 06 Oct 96, Paul Edwards wrote to Paul Wankadia --



PW> I tried to automatically determine the maximum string length by using :

PW> int Max_Length = sizeof(String) / sizeof(char);

 PE> BTW, as far as I'm aware, you're meant to go "sizeof String" for a

 PE> variable, and "sizeof(char)" for a data type.



"sizeof String" ???  Are you SURE???  No one else has pointed that out!



PW> is supposed to be in a function that is called and passed a char * to

PW> That is correct -- I am getting 2, not 100.  How do I get the correct

PW> length with just a char * ???

 PE> The short story is you can't, because the function may be external,



It is intended to be external.



 PE> and how did you expect the compiler to magically know the length? It



Damn.  Oh well -- back to passing the strlen() then :)



 PE> can only know the length if you give it that information, either as an

 PE> extra parameter, or padding the variable out so you can do a strlen(),



Extra parameter, I reckon.  I can't rely on "padding" and passing a struct

with String inside it is MUCH too bothersome for me (and for anyone who might

want to use my function :)



 PE> or specify the size in the prototype, or use a #define, or use a

 PE> STRING structure of your own, that contains both a length and a

 PE> character pointer.  BFN.  Paul.



None of the above would really cut it.  I'll go with the parameter, unless I

decide to move completely to OOP (in which case I'll make a struct :)



Chow.



Junyer Hakker.



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